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J. W. COSGROVE.

COATING APPARATUS.

APPLICATION FILED MAR. 15, I918.

Patented @ept. 16, 1919.

2 SHEETS SHEET l.

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application filed March in,

To all whom it may concern:

Be it known that l, dorm W. "Cosonovn, a citizen of the United States,residing at .ll/ledford, in the county of Middlesex and State ofMassachusetts, have invented certain lmprovements in floating apparatus,of which the following description, in connection with the accompanyingdrawings, is a specificatiomlike reference characters on the drawingsindicating like parts in the several figures.

My invention relates to coating apparatus and moreparticularly to thattype in which coating material is applied simultaneously to both sidesof the work, though not necessarily confined to such organizations.

An object of the invention is to provide improved means for yieldablysupporting an applying member and for supplying the coating materialthereto. For this purpose l prefer to mount the receptacle for thecoating material pivotally, the applying member being movable upon thereceptacle in itscoating action and yielding by virtue of the movementof the receptacle about its fulcrum. To obtain the desired holdingcapacity for the coating material, the receptacle may have, in additionto the fulcrum portion and applying portion, a reservoir portionextending at one side of the fulcrum; and, because of the depth ofthereceptacle, l have shown a movable feed member for supplying thecoating material to the applying member and driven therefrom.

Another object of the invention is to render a feed member, as abovementioned, particularly when it is in the form of a roll, efi'ectiveinsupplying the coating material. To this end, the roll is toothed and thefaces of the teeth are so designed as best to lift the material from itsreceptacle and deliver it to the applying member.

l i 'ith rotatable applying members, and especially those receivingcoating material from an elevated receptacle, there is a tendency tocarry the material along cooperating frame or abutment elements, uponwhich it accumulates and drips upon the work or its support. Uneof theobjects of my in vention is to avoid this by furnishing means preventingthe passage of the coating specification of Letters Patent.

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Figure 1 is a top plan view of the lower 7 tank structure of oneembodiment of the -in vention;

Fig. 2 is a side elevation of the machine, parts beingbroken away and insection;

Fig. 3 is a partial end elevation looking from the left in Fig, 2;

Fig. i is a detail in perspective of the upper applying roll, with itsabutment plates and slides; and

Fig. 5 is .a detail in elevation of the inside of one of the abutmentplates.

The frame of the machine is shown as consisting of a base portion 10,suitable for mounting upon a bench and having a horizontal arm 12 inwhich is journaled a shaft l t rotated through power applied to fast andloose pulleys 16. Fixed upon the shaft, between separated extensions 18,18 of the frame arm, is a suitable applying roll 20 which receives thecoating material, as cement, from a tank 22 carried upon a horizontalsurface at the upper side of the arm l2. The passage of the cement fromthe tank to the roll is controlled by a valve 24. From the valve theflow is directed to the roll by vertical inner and outer abutment plates26, 26 and by horizontal slides 28 and 30. The abutment plates arelocated one at the inner side of the roll, between it and a verticalface upon the end of the frame arm 12, while the other plate is forcedagainst the outer surface of the roll by screws 32 threaded through abar 341 secured to the ends of the extensions 18. lhe slides 28 and 30have their outer extremities in slots in the upper portions of theextensions 18, their upper surfaces being below the tops of theextensions. At their inner ends they extend into proximity with theperiphery of the roll 20. They are secured in place by screws 36threaded into the frame extensions through slots which are recessed toreceive the heads of the screws. By these slotted connections the slidesmay be adjusted with reference to the roll, and,

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lflil lib llllll since the screws 36 are beneath the tank, the slidescan onlybe varied in position when the tank is removed. This preventsunskilful operators from tampering with the adjustment, which may bestbe made, according to the grade of cement which is to be used, by anexperienced person when the filled tank is put in place. The slide 28which is at the down-going side of the roll controls the amountof-cement which is carried from the tank by the applying surface to theWork, while the opposite slide 30 bars the passage of cement from thetank in this direction yet allows any excess brought up from the work tobe carried by it to join the fresh supply from the tank.

As thus far described, the apparatus is generally as disclosed in myPatent No. 1,242,925, dated October 16, 1917. It is found that as theroll 20 rotates in the direction of the arrow in Fig. 5, the cement isnot only carried by the peripheral applying surface beneath the slide28, but also tends to creep between the sides of the roll and theadjacent faces of the abutment plates 26 and gather at a where theperiphery of the roll emerges from between the plates and thereaccumulates to drip and deface the work. This I avoid by spacing theedges of the roll and the abutments from one another at these points,preferably by a groove or recess 38, which is formed in each abutmentextending from a, where the edges of the roll leave the abutment in itsrotation, nearly to the top of said abutment. Except at the narrowspaces between the ends of the slots and the bottom of the tank, thisarrangement eliminates the contacting surfaces along which the creepingof cement occurs. The slight accumulation at the inner extremities ofthe slots hardens and does not reach the dripping points at a. llfnecessary, the slots may be occasionally cleaned by the introduction ofa pointed implement.

The base portion 10 of the frame is divided and through this spacebeneath the frame arm 12, extends a lower tank member. the tankpreferably consisting of an integral structure including a fulcrum arm40, a gear chamber as, an applying portion ll, and a reservoir 46. Thearm 40 is pivoted at 48 near the inner end of the frame arm 12, and inbearings adjacent to the pivot and at the opposite end between the gearchamber and the applying portion is journaled a horizontal shaft 50having fixed at its outer extremity, beneath and in vertical alinementwith the roll 20, an applying roll 52. The shaft 50, with its roll 52,is rotated from the shaft 141 through gearing 54 which is locatedadjacent to the fulcrum 48. This permits the tank structure to swingabout its pivotal point without inter-. ferenc with the drivingengagement of the gearing 54. To hold the lower tank normally upward sothat the rolls 52 and 20 may be in coiiperation, it is provided with adepending arm 56 engaged by the inner end of a helical spring 58surrounding a guide rod 60 pivoted near the lower end of the arm 56 andresting at its outer extremity against a screw (32, which has an openingto receive the rod 60. The screw (32 is threaded into a boss in theframe and by its adjustment enables the force with which the roll 52 ispressed up toward the roll 20 to be varied. A stop screw 63 threadedthrough the frame opposite the screw (32 and contacting with the arm 56adjustably limits the upward movement of the roll 52. To give the propercapacity for containing cement, the bottom of the applying portion it isconsiderably below the lower edge of the roll 52, and to this applyingportion is connected the reservoir portion 46 of the tank, which extendsto one side of the frame and has an inclined bottom Wall causing thecontcnts to drain toward the applying portion of the tank sothat all thecement may be used. Access may be had to the reservoir through anopening at its outer and upper portion, normally closed by a horizontalcover plate 64 secured in place by thumb screws 66. The top of thereservoir does not exceed in height the upper edge of the applyingportion where the lower roll 52 leaves it, so that the level of cementin the tank can not rise high enough to overflow at the opening for theroll.

The depth of the lower tank is such that an applying roll of the desireddiamcl'cr car not operate in contact with the ccmcnt when it is low. Forthis reason cement supplied to the roll 52 by a feed roll 68 fixed upona shaft 70, which extends through the chamber 42 and applying portion 44of the tank. having a bearing in the intermediate wall .71. The shaft 70is rotated from the shaft 50 through gearing 72 located within (hechamber 42 and inchiding an intermediate idler gear fast upon a shaft 74journalcd in the tank walls. Lubricating openings 7G for the shaft 50,70 and 7% may be provided in the wall 71. Access to the chamber -12 maybe had through an opening closed by a cover plate 78 secured in place byscrews. it removable plate 80 normally closes an opening in the outerend of the tank, allowing the rolls 52 and 68 to be reached and thecement cleaned from the rcccptaclc. The feed roll 68 is toothed, eachtooth having a peripheral end surface 82 which may be arcuatc and whichmoves just out of contact with the applying surface of the roll Thelorward surface 84- of each tooth is preferably substantially radial.the rcar surface R? being inclined from the fiattcncd or curved endtoward the base of the succeeding tooth, into which it preferably mergesby a curvcd Bil till

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iniapae depression 88. its the feed wheel is rotated in the direction ofthe arrow in Fig. 3, each. tooth, as it emerges from the cement, by itsforward radial face eflectively lifts a charge. This, because of theinclination of the direct- 1ng surface 86 and the centrifugal forcegenerated in the revolution of the teeth, as it advances rounds out overthe peripheral surface 82, which thus delivers it to the applying roll.avoided by a from the applying surface. Tf any excess of cement isreceived by the roll 52, it is removed by a scraper 90, which isadjustably secured at the top and outer side of the applying portion atof the lower tank by a screw 92 extending through a slot.

As the work enters between the rolls 20 and 52, the lower tank, by itspivotal move ment under the influence of the spring 58, holds theapplying rolls and wor in proper contact and permits yield forinequalities in the work. Since this tank is a self-contained structurecarrying the entire supply of cement and the movable applying elements,no dificulty is encountered through leakage as a result of the yield ofthe lower applying roll.

The width of the band of cement applied to the work by the rolls 20 and52 is determined by a gage 9t carried upon the top of the tank above thewall 'Z'l. The ver tical face of .this gage is adjacent to the rolls andwith it the work contacts. The upper surface of this gage forms, withthe inner end of the roll 20, a converging throat (see Fig. 3), intowhich, in absence of means for preventing it, the operator might insertthe work, causing its forward edge to be cut between the rotating rolland the gage. j This is avoided by a guard, shown as in the form of arod 96 projecting horizontally from the upper portion of the agingsurface'and in proximity to the perip cry of the roll 20. its theoperator feeds the work over the forward upper surface of the lower tankthe rod 96 prevents said work from being raised that it can be caughtbetween the upper roll and gage and insures its delivery between therolls.

An unduly heavy supply is Having thus described my invention, what Tclaim as new and desire to secure by Letters Patent of the llnitedStates is:-

1. Tn a coating apparatus, a frame, a

worlcengaging element. carried thereby, a

receptacle for coating material pivot-ally.

mounted upon the frame and extending into proximity with thework-engaging element, and a rotatable applying member journaled withinthe receptacle and being movable separation of the surfaces 82 the frameat one side of the applyin roll and extendin beneath it, and an app yingroll journale .in the receptacle for cooperation with the first-namedroll.

3. Tn'a coating apparatus, a frame, a rotatable applying roll carriedthereby, a receptacle for coating material pivoted upon the frame at oneside of the applying roll and extending beneath it, an journaled in thereceptacle for cooperation with the first-named roll, and a supply rollfor the applying roll journaled in the re ceptacle.

4t. Tn a coating apparatus, a frame, a rotatable applying rollcarriedthereby, a receptacle for coating material pivoted upon the frameat one slde of the applying roll and extending beneath it, and anapplying roll journaled in the receptacle for cooperation with thefirst-named roll, the bottom of the receptacle being inclined downwardlyto a point under the lower applying roll.

I Tn a coating apparatus, a frame, a coating roll, and areceptaclehaving as an integral structure a fulcrum portlon forpivotally connecting it to the frame and a bearing portion for movablysupporting the roll in the receptacle.

6. Tn a coatlng apparatus, a frame, a coating roll, and a receptaclehaving as an integral structure a fulcrum portion 'for pivotallyconnecting it to the frame, a hear ing portion for movably supportingthe roll in the receptacle and a reservoir portion extending atone'sicle of the frame.

7. Tn -a coating apparatus, a frame, a

coating roll, a receptacle having as an integral structure a bearingportion for rotatably supporting the roll Within the receptacle, an armby whichthe receptacle is pivotally mounted-upon the frame and a secondarm, and yieldable connections between the second arm and the frame.

"8. In a coating apparatus, aframe, a receptacle pivotally mounted uponand pro receptacle. 7

10. In a coating apparatus, a frame, a driving shaft journaled therein,a receptacle pivoted on the frame, a shaft ournaled in the receptacle,gearing conneotlng the shafts adjacent to the pivotal pointof thereceptacle, and an applying roll carried by the receptacle shaft.

11.. Tn a coating apparatus, a frame, a:

applying r011 jecting from the frame, the height of said driving shaftjournaled therein, a receptacle pivoted on the frame, a shaft journaledin the receptacle, gearing connecting the shafts adjacent to the pivotalpoint of the receptacle, an .applying roll carried by the receptacleshaft, a feed roll rotatable in the receptacle and cooperating with theapplying roll, and gearing journaled in the receptacle and connectingthe applying and feed rolls.

13. In a coating apparatus, a receptacle for coating material, applyingand feed rolls journaled in the receptacle, and gearing for the rolls,there being a chamber formed in the receptacle for lnclosing thegearing.

14:. In a coating apparatus, a frame, a receptacle for coating materialprovided with an arm fulcrumed upon the frame, applying and feed rollsjournaled near one side of the receptacle in a portion for containingthe coating material, and gearing connecting the rolls, there being achamber formed in the receptacle between the arm and material-containingportion and inclosing the gearing.

15. In a coating apparatus, a rotatable applying roll, and a rotatabletoothed feed roll cooperating therewith, the teeth of the feed rollhaving their forward faces substantially radial and their opposite facesinclined rearwardly from the outer end toward the bases of thesucceeding'teeth.

16. In a coating apparatus, a rotatable applying roll, and a rotatabletoothed feed roll cooperating therewith, the teeth of the feed rollhaving their forward faces substantially radial and meeting at theirouter ends peripheral faces, from which are faces inclined rearwardlytoward the radial faces of the succeeding teeth.

17. In a coating apparatus, a tank, an applying roll rotatable in thetank, and a toothed feed roll rotatable in the coatin material at thelower portion of the tan beneath the applying roll, the ends of theteeth of the feed roll being in proximity to but out of contact with theapplying roll, each tooth being provided with a substantially radialface and an opposite face inclined toward the radial faces of thesucceeding teeth.

18. In a coating apparatus, a tank and applying roll rotatable in thetank, and a toothed feed roll rotatable in the coating material at thelower portionof the tank beneath the applying roll, the teeth having attheir outer extremities supply surfaces for the applying roll and beingprovided with forward lifting faces and rear directing faces.

19. In a coating apparatus, a tank for coating material, an applyingroll receiving material from the tank, and an abutment into proximitywith which the end of the roll extends, there being means between theroll and abutment for preventing the passage of coating material.

20. In a coating apparatus, a tank for coating material, an applyingroll receiving material from the tank, and an abutment into proximitywith which the end of the roll extends, there being means between theroll and abutment and extending along the periphery of the roll forpreventing the passage of coating material.

21. In a coating apparatus, a tank for coating material, a rotatableapplying roll receiving material from the tank, and an abutment intoproximity with which the end of the roll extends, the abutment andperiphery of the roll being spaced from one another where the peripheryin its rotation leaves the abutment.

22. In a coating apparatus, a tank for coating'mate'rial, a rotatableapplying roll receiving material from the tank, and an abutment intoproximity with which the end of the roll extends, the abutment beingprovided with a recess along the periphery of the roll with an openingwhere the periphery in its rotation leaves the abutment.

23. In a coating apparatus, a tank for coating material, an applyingmember rotatably mounted at the bottom of the tank and receiving'thecoating material upon its;

applying surface, and plates contacting with the ends of the roll, saidplates having grooves along the periphery of the roll.

24. In a coating. apparatus, a tank for coating material, an applyingmember rotatably mounted at the bottom of the tank and receiving thecoating material upon its applying surface, and plates for guardingagainst the flow of material from the tank along the ends of the roll,said plates including grooves extending from points near the bottom ofthe tank through the edges of the plates.

25. In a cementing apparatus, a rotary applying member and a relativelystationary member having converging edges, and a member for contact withthe work arranged to prevent the entrance of said work between theconverging edges.

26. In a cementing apparatus, a rotary applying member, a work gage, anda guard member situated adjacent to the applying member and gage forcontact with the work.

27. In a cementing apparatus, an applying roll, a gage having a surfacefor contact with the work, and a gtiard projecting the periphery of theroll forms a converging from the Work-engaging surface of the gagethroat, and a guard rod projecting from the adjacent to the periphery ofthe applying Work-engaging surface of the gage adjacent 10 r011. to saidthroat.

5 28. In a cementing apparatus, an apply- ,In testimony whereof I havesigned my ing roll, a gage having a surface for conname to thisspecification tact with the Work and a surface which with JOHN W.COSGRUVE,

